<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>

    <style>
        * {
            margin: 0px;
            padding: 0px;
        }

        #root {
            width: 800px;
            height: 100vh;
            margin: 20px auto;
            background-color: #f6f6f6;
            text-align: center;
        }

        .demo {
            width: 400px;
            margin: 30px auto;
            text-align: left;
            overflow: hidden;
        }

        .demo div {
            margin-top: 20px;

        }

        button {
            width: 100px;
            height: 40px;
            text-align: center;
            background-color: rgb(89, 235, 240);
            border-style: none;
            outline-style: none;
            border-radius: 30px;
            cursor: pointer;
        }

        button:hover {
            background-color: rgb(184, 218, 219);
        }

        button:active {
            background-color: rgb(141, 141, 141);

        }

        .demo>div:hover {

            outline-style: dotted;
            outline-offset: 5px;
        }
    </style>
</head>

<body>
    <div id="root">
        <button id="selection">selection btn</button>

        <button id="logic">logic btn</button>
        <button id="trigger">trigger btn</button>

        <div class="demo" contenteditable="true">
            <p class="shirkhan_clicked_target" data-mpa-powered-by="yiban.io">​asdfasdfasdfasdf<br></p>

        </div>
    </div>
</body>

</html>